614 CENTRAL AVENUE, FINDLAY, OH 45840
The model RC-1T4A controller has been specifically designed to provide remote control of heliport lighting systems which require two control functions. This control system will allow the approaching pilot to select either of two operating modes at his
discretion. The RC-1T4A is enclosed in a weather-proof water-tight housing and is conservatively designed for continuous outdoor unattended operation.
The RC-1T4A receiver controller complies with FCC rules and regulations Part 15.
The receiver is of combination field-effect transistor and integrated-circuit design. The sensitivity is adjustable from 1 microvolt to 30 microvolts as desired by the user, permitting a control range of 1 to 20 miles. Receivers are shipped normally adjusted to a
sensitivity of 10 microvolts. The unit is designed to operate from 120 volt ±20% 50-60 HZ single phase power.
3.0 THEORY OF OPERATION:
The system is activated upon receiving a series of pulses of R.F. energy where each succeeding pulse follows the preceding pulse by not more than one second. At the fifth pulse the first relay (K1) closes. At the third pulse after closing Relay K1, the second
relay (K2) closes. At the seventh pulse the relays open. NOTE: At any time in the sequence the pilot has the option of sending three, five or seven pulses to command the system to his requirements. The system will remain at the intensity level of the last command
received. The solid state timer will continue to operate for 15 minutes after which it will cause the system to revert to the original "off" condition. The timer is reset by the receipt of any command at anytime, reinitiating the 15 minute "run" cycle. Operating time may be
selected in 15 minute intervals up to 1 hour by setting switches on the Timer Board.
In the event of power failure, the system will resume operation in the last commanded mode. The solid state receiver-controller is composed of five printed circuit cards which include the regulated power supply and maintenance test oscillator.